If you’ve ever wanted to color your old black and white photos, recolored is the software for you. Its free and easy to use. Just choose colors from the palette or common gallery (skin, eyes, face). Then, draw lines to show the basic areas that should be colored, hit c, and wait.

Here’s what it can do:

Pretty cool and easy to use! You can read about the original research by Anat Levin, Dani Lischinski, and Yair Weiss, or download Matlab source code.